Shaker-screen apparatus



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APPLICATION FILED MAY 24, I916- Patented Mar. 29, 1921.

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0. G.-PETERSEN.

SHAKER SCREEN APPARATUS.

APPLICATION FIL'ED MAY 24. ms.

Patented Mar' 29, 19211.

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0. G. PETERSEN.

SHAKER SCREEN APPARATUS.

APPLICATION FILED MAY 24,1916.

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Patented Mar. 29, 1921.

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OLUF G. PETER-SEN, OF SOMERSET, IKEN'IIZTJ'SKY.

SHAKER-SCREEN APPARATUS.

Specification of Letters Patent.

Original application filed January 6, 1913, Serial No. 740,493. Divided and this application filed May 24,

T 0 all whom it may concern:

, Be it known that I, OLUF G. PETERSEN, a citizen of the United States, and resident of Somerset, county of Pulaski, and State of Kentucky, have invented certain new and useful Improvements in and Relating to Shaker-Screen Apparatus, of which the following is a specification.

This invention involves improvements in and relating to supporting frames for shaker screens, and is a division of my patent application filed January 6, 1913, Serial Number 740,493; and the objects and nature of the invention will be readily understood by those skilled in the art in the light of the following explanation of the accompanying drawings illustrating what i. now believe to be the preferred mechanical expres sion and embodiment from among other constructions, arrangements and combinations within the spirit and scope of he invention.

It is an object of the invention to provide certain improvementsin the permanent supporting structures or frame works for the moving parts of coal mine shaker screens and other vibrating apparatus whereby a suflicient mass will be provided at a minimum expense to counteract, overcome or absorb the effect or action on the supporting framework due to the vibration or movement of the moving parts carried thereby; and whereby maximum strength, durability and permanence of the framework will be attained with easy accessibility to moving parts.

A further object of theinvention is to provide certain improvements in formation and arrangement whereby a highly eficient, and durable supporting framework for shaker screens and other vibrating apparatus will be produced possessing certain other advantages peculiar to this art.

A further object of the invention is to provide certain improvements in details of construction, and in combinations and arrangements of parts, whereby a highly efficient and durable shaker screen supporting frame work will be produced.

The invention consists in certain novel features of construction and in combinations and arrangements as more fully and articularly' set forth and specified hereinafter.

Referring to the accompanying drawings:-

Figure 1, is a side elevation of apparatus Serial No. 99,568.

involving my invention, dotted lines indicating certain hidden parts.

Fig. 2, 1s a section on the line A-,B,

Fig.

Fig. 3, is a section on the line 0-1), Fig. I

Fig. 4, is a top plan, certain parts being broken away.

F 1g. 5, is a detail elevation showing a modified support for screen hangers.

Fig. 6, is a vertical section thereof on the line E F, Fig. 5.

F ig. 7 is a detail elevation of one of the hanger supports of Fig- 1.

Fig. 8, is a vertical section on the line G-H, Fig. 7

The invention particularly contemplates the provision of an improved supporting framework for apparatus to rapidly handle the large output of coal from the mines and usually to receive coal from a tipple, and screen and size such coal and deliver the same into railroad cars or other vehicles movable beneath the apparatus.

In the drawings, I show an apparatus in accordance with my invention arranged transversely of and above three sidings, railway tracks, or vehicle passageways A, B, C. This apparatus comprises a permanent rigid supporting structure or framework composed of a homogeneous mass or body of metal reinforced concrete or equivalent material. This rigid framework comprises a pair of spaced usually-parallel elongated longitudinal rigid top side beams or walls 3, arranged in an elevated position above and transversely of the several tracks or vehicle passages A, B, and C longitudinally inclined downwardly from their front ends toward their rear ends. These top side walls are desi ned to support the elevated longitudinally inclined shaker screens arranged in or above the open space between said top beams and longitudinally thereof.

These top beams are supported by and connect the upper ends of series of massive heavy vertical side columns, 1, 1, 1', gradu ally decreasing inheight from the high front end column 1, to the; low rear end column 1". Columns of the opposite series are correspondingly arranged to form pairs of columns between the various tracks or passageways A, B, C. The several columns (six in the particular example illustrated) rise from the ground andare mounted on suitable foundations designed to properly carry the great weight of the structure. For instance, I show each column rising from a base 5, with said bases and the lower ends of the opposite side columns bound together and rigidly connected by horizontal The opposite columns l, also the opposite arranged at and between the inner faces of columns 1 are tied together at points inter-- mediate their ends bycross webs'T, arrangeda distance above and parallel with the webs 6, and I preferably provide vertical enlargements or braces t", at the junctions betweenthese webs and the side faces of the columns.

The upper portions of the two front end columns 1, are tied together by a'horizontal cross web 9, extending between the inner faces of said columns and extended forwardly to constitute a forwardly and laterally projected floor or platform provided with supports or pillars 10, carrying the journal boxes for the shaker screen actuating shaft hereinafter more fully described. Verticalcorner or angle bracesl", can be the columns 1, and the under face of the floor 9. The upper parts of the columns of each side series are also rigidly tied and connected together by horizontal longitudinal side webs, walls or connections 2, joining the side faces of said columns, and preferably located a distance below the longitudinal top" side walls or screen supporting beams 3.

Vertically disposed corner or angle braces or enlargements 4:, are preferably arranged above and below the webs 2, at the junctions between the same andsaid columns,

and also below the top side walls 3, at the junctions between the same and the columns.

I prefer to provide the top elevated longitudinal screen-supporting portion of the frame work with an approximately horizontal cantaliver extension or overhang projecting rearwardly from the rear columns 1 over'the track or passageway C, and virtue ally forming a longitudinal rearward continuation of the top side walls 3L This cantaliver extension longitudinal side walls or beams 8, at their outer ends rigidly tied and connected toget-her by cross piece 14, so that the open space between the sides 8, forms a rearward longitudinal continuation of the space between the sides 3. V

The sides, 8, are rigid with'the rear end columns and join to the rear'sides thereof and are braced and strengthened by the ver tical corner braces i, at the junctions beconsists of projecting outwardly from the top longitudinal edges thereof and extending across the upper ends of the columns 1, 1 The cross portion 14, is preferably arranged horizontal and of suflicient width to form a transverse platform or running boardc0nmeeting the rear ends of the opposite longitudinal platforms 13.

These platforms are also formed 'ofcon- 'crete in one piece or homogeneous with the sides and columns and having metal reinforcements j oinin and rigid with the metal reinforcements of connected or adjoining parts of the framework.

The framework described is composed of a homogeneous or single mass of concrete bound together throughout by metal rein forcements with massive columns as indicated forthe purpose of providing ashaker screen support of the necessary rigidity, mass and wei 'ht to absorb or overcome the vibrational effect or action of the shaker screen or screens particularly when such screens are carried at the top of such an ele vated structure as required for handling a coal mine output and deliveringthe same to cars on railway tracks. By providing a concrete' structure of approximately the arrangement disclosed, permanence, great ri-. gidity and the necessary weight or'mass are attained at minimum first cost andat minimum upkeep expense.

The mass of the monolithic framework will absorb the vibrations of the screens or other vibrating apparatus carried thereby so that the, common bracing for the ends of shaker supporting frames are unnecessary and in my framework horizontal or longitudinal vibration of the framework while the shaker screen is operating, is not apparcut and has been to all intents and purposes eliminated, even though the screens and the coal thereon presents an aggregate weight of many tons.

Shaker screen supporting pedestals, pillars or uprights 12, are arrangedat intervals along the top sides 3, 8, and rise from the top edges thereof. These pillars 12, can

be formed of concrete molded on and with top walls 3, as shown in Figs. 1, 7, and 8.

If so desired, metal brackets 12 can be provided for this'purpose, asshownby Figs.

5 and 6, These brackets have flat basesfitting on the top edges of the walls 3, and vertical flanges 39, fitting the vertical inner faces of said walls and the brackets are, secured by vertical and transverse bolts 38, extending through said walls and if so desired embedded or molded therein.

The'upwardly projecting bodies of the brackets carry the horizontal inwardly projecting studs, spindles or journals 36 to receive the swingable links or hangers 27, that 37, embedded in the concrete and receiving the studs, journals or spindles 86, for the screen links or hangers 27.

In the particularexample illustrated, I provide several superimposed shaker screens 15, 16, 17, arranged over and longitudinally of the space between the top walls of the framework and carried by the hangers or depending links mounted on the spindles 36, 36. The coal is delivered onto the front end of the top screen by a chute 21, usually depending from the coal tipple (not shown). This chute is adapted to receive the coal dimiped from the mine cars,or other conveyers, and discharge the same to the shaker screens. 2

The longitudinally arranged reciprocatory members 15, 16, virtually constitute a single or unitary longitudinally inclined shaker member or element, and this element is carried by and arranged on fixed bottom cross bars 29, having projecting opposite end journals extending transversely through the lower ends of swingable hangers or suspension links 27, located beyond the opposite sides of said shaker element and between the same and the hanger supporting pillars rising from frame sides 3 and 8.

The part 17, constitutes the lower shaker element, and this element is likewise supported by and provided with bottom cross bars 29, having projecting opposite end journals extending transversely through and mounted in the lower ends of another set of swinging links or suspension hangers arranged between the sides of said lower shaker element and the adjacent sides 3, 8, and pillars mounted thereon.

Suitable means are provided for simultaneously, uniformly and oppositely reciprocating or oscillating the upper and lower shaker screen elements. F or this purpose, I show a horizontal rotary shaft 26, arranged transversely of the framework, and in the present instance, located in front of columns 1, and carried by boxes on the supports 10, rising from the platform 9. This shaft is provided with driving pulley 23, and at its intermediate portion opposite the open space between the columns 1, is provided with one or more pairs of oppositely arranged eccentricsv 2 1, 24;. Each eccentric 2 1, is operatively connected by a pitman 22, to the front end of the upper shaker screen element, while each oppositely arranged eccentric is operatively connected by a pitman 22, with the front end of the lower shaker element.

By employing the framework substantially as disclosed, supporting the shaking screen elements in the elevated exposed positions, all parts of the screening surfaces .re readily accessible. The walk ways or running boards 13, are arranged at the top portions of the side walls and the operators or attendants can stand on and move along these boards so as to easily reach any part of the screens and screen surfaces to ma nipulate the lading and to observe the operation'thereof. This featureof easy access to all parts of the screening surfaces is of great importance in the operation of shaker screens of large capacity.

I do not wish to limit myself to any particular number or arrangement of passageways for railroad cars ;or other vehicles; nor to any particular number or arrangement of supporting columns 1, 1, etc., nor to the particular side braces or connections; nor to my particular framework in connection with the peculiar pendulum suspension system for the shaker elements as shaker elements otherwise supported and-actuated might be arranged thereon.

It is also evident that various modifications and departures might be resorted to without departing from the spirit and scope of my invention and hence I do not wish to limit myself to the exact disclosure hereof.

What I claim is 1. Shaker screen apparatus comprising a massive permanent open work monolithic frame supported on and rising from the ground and providing vehicle passage ways and vertical columns and upper longitudinal walls and transverse portions connecting said columns, said frame being provided with upper supports for the workmen, and load carrying shaker mechanism 'arranged in the upper portion of said frame and supported thereby and vibratory longitudinally thereof, said monolithic framework absorbing the periodic stresses and movement transmitted thereto by said mechanism, and constructed and arranged to render said mechanism and its load accessible to the workmen from said upper supports, substantially as described.

2. Shaker screen apparatus comprising a vibration-absorbing monolithic open framework rising from the ground and shaker mechanism supported by and longitudinally arranged in the upper portion of said framework, said mechanism vibratory in said frame work and transmitting longitudinal and vertical stresses and vibrations thereto, said framework absorbing said stresses and vibrations, and elevated running boards supported by said framework and from which said mechanism is accessible.

8. Shaker screen apparatus comprising an elevated massive permanent rigid vibrationabsorbing monolithic framework rising from the ground and having permanent bases and providing a vehicle passageway along the. ground, said framework constructed and arranged to support shaker screen mechanism in the upper portion thereof and to absorb the vibrations and stresses of said mechanism in action, said framework embodying a longitudinal top end cantaliver overhang provided with longitudinal running boards from which said mechanism is accessible, substantially as described.

4. Shaker screen apparatus comprising a massive vibration-absorbing permanent open-work monolithic frame providing a lower vehicle passage-way and embodying upright massive opposite side columns rising from the ground, transverse connecting portions and upper opposite side longitudinal connecting portions forming the top of the frame with opposite longitudinal frame members connected at their ends to provide a central top longitudinal opening, and a longitudinally-vibratory load-carrying shaker mechanism at the top of the frame and supported from said top of the frame and arravages ranged in said opening, said monolithic frame constructed and arranged to render said mechanism accessible and to absorb the periodic stresses and strains transmitted thereto by said mechanism'in action substantially as described.

5. Shaker screen apparatus comprising a vibration-absorbing permanent monolithic framework providing alower'vehicle pas,-

sage-way and embodying upright massive opposite-side columns rislng' from the ground and transverse and opposite side longitudinal connecting portions forming the upper part of the framework of longitudinal framegmembers and transverse end stresses and strains transmitted thereto by in action.

OLUF e. PETERSEN.

said mechanism 

